I configured ec2 cloud slave on jenkins - when my multibranch pipeline starting it's first checkout the scm
when this run on master everything works fine and the checkout success but when it run on slave it's look it does not know the key:
In the multibranch pipeline configurations it's configured to use my SSH credentials:
This is the key configuration:
So it's look like the slave don't know the key - how can I configure this key in the slave ?